358 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 56. 



indicates that this is a distinct species, and as the original diagnosis 

 was very brief, a full description is now supplied. 



LEPTOTHYRA JUANENSIS, new species. 



Shell solid, turbinate, very dark olive, with a very minute smooth 

 nucleus and about five well-rounded whorls; suture obscure, not 

 appressed; spiral sculpture of (on the penultimate whorl five, on 

 the last whorl about a dozen) strong, undulate or beaded cords with 

 wider rather deep interspaces; axial sculpture of close, oblique, 

 rather prominent incremental lines; aperture oblique, internally 

 nacreous, the outer lip thin, the body with a glaze of nacre, the pillar 

 lip concave, white, nacreous with two rather formless nodulations 

 anteriorly; height, 8; maximum diameter, 9 mm. U. S. Nat. Mus. 

 Cat. No. 186070. 



Type-locality. — Tia Juana, Lower California, near San Diego, 

 California; collected by J. H. Paine. 



This is the least attractive and one of the largest species of the 

 genus on the west coast north of Cape San Lucas. 



Dr. Paul Bartsch has proposed the varietal name fenesirata for a 

 form of Leptothyra paucicostata, in which, under the strong spiral 

 sculpture, there is visible in the interspaces a certain number of 

 raised radial threads forming a more or less evident reticulation. 



LIOTIA SCITULA, new species. 



Shell minute, white with flecks of brown, of about four whorls, 

 including a very minute smooth nucleus; spire flattened, suture 

 distinct; axial sculpture of fine incremental lines, somewhat wrin- 

 kled in front of tlie suture and on the last whorl developing a narrow 

 row of beads at the suture, and crenulating on the base the margin 

 of the umbilicus; spiral sculpture of a very prominent, minutely 

 crenulated keel at the periphery and a smaller one on which the 

 suture is laid; the margin of the narrow umbilicus is also thread- 

 like; aperture rounded except where modified by the external 

 sculpture; the body with a glaze of enamel, the pillar lip somewhat 

 thickened; height of shell, 1; maximum diameter, 2 mm. U. S. 

 Nat. Mus. Cat. No. 194975. 



Type-locality. — U. S. Fish Commission station 2813, among the 

 Galapagos Islands, in 40 fathoms, coral sand. 



The specimen may not be entirely adult and the aperture in the 

 full-grown sheU may be modified from the above description. 



MOLLERIA DRUSIANA, new species. 



Shell minute, of two and a half rapidly enlarging whorls, whitish, 

 covered with an olivaceous periostracum; suture distinct, rather 

 deep; whorl section circular, surface smooth except for microscopic 



